1. Institute of Physical Biology-South Bohemia University, Nove Hrady 37333, Czech Republic, School of Microelectronic Engineering, University Malaysia Perlis (UniMAP), Block A, Kompleks Pusat Pengajian, 02600 Arau Jejawi, Perlis, Malaysia, Electrical Engineering Department, Czestochowa University of Technology, Al.Armii Krajowej 17/19, Czestochowa, Poland, and National Physical Laboratory, Dr. K S Krishnan Marg, New Delhi 110012, India